import 'package:flutter/material.dart';
import 'dart:async';

import 'package:flutter/services.dart';
import 'package:platform_service/platform_service.dart';

import 'image_picker_example.dart';
import 'scanner/scanner_example.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _platformVersion = 'Unknown';

  @override
  void initState() {
    super.initState();
    initPlatformState();
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    String platformVersion;
    // Platform messages may fail, so we use a try/catch PlatformException.
    // We also handle the message potentially returning null.
    try {
      platformVersion = await PlatformService.getPlatformVersion() ??
          'Unknown platform version';
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {
      _platformVersion = platformVersion;
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('平台服务Demo'),
        ),
        body: Builder(builder: (context) {
          return Center(
            child: Column(children: <Widget>[
              const SizedBox(height: 16),
              ElevatedButton(
                child: const Text('ImagePickerExample'),
                onPressed: () {
                  ImagePickerExample.push(context);
                },
              ),
              const SizedBox(height: 16),
              ElevatedButton(
                child: const Text('ScannerExample'),
                onPressed: () {
                  ScannerExample.push(context);
                },
              ),
            ]),
          );
        }),
      ),
    );
  }
}
